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[idd] config: reload persisted display modes

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Rebuild the driver's cached mode list before replugging the monitor so
Windows enumerates the settings saved by the helper.

Keep saved mode refresh rates intact and update only ExtraMode to the
configured default refresh.
This commit is contained in:
Geoffrey McRae
2026-08-06 23:05:45 +10:00
parent 05599ffd02
commit a279a87bdb
5 changed files with 65 additions and 13 deletions
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51
idd/LGIdd/CIndirectDeviceContext.cpp
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@@ -635,6 +635,39 @@ void CIndirectDeviceContext::ReplugMonitor()
m_finishInitQueued.store(1);
}
void CIndirectDeviceContext::ReloadSettings()
{
bool modesLoaded = false;
AcquireSRWLockExclusive(&m_modeReloadLock);
CSettings::DisplayMode extraMode;
if (g_settings.GetExtraMode(extraMode))
{
const unsigned refresh = g_settings.GetDefaultRefresh();
if (extraMode.refresh != refresh)
{
extraMode.refresh = refresh;
if (!g_settings.SetExtraMode(extraMode))
{
ReleaseSRWLockExclusive(&m_modeReloadLock);
return;
}
}
}
modesLoaded = PopulateDefaultModes();
ReleaseSRWLockExclusive(&m_modeReloadLock);
if (!modesLoaded)
{
DEBUG_ERROR("Failed to reload the display mode list");
return;
}
ReplugMonitor();
}
void CIndirectDeviceContext::OnMonitorDestroyed(IDDCX_MONITOR monitor)
{
AcquireSRWLockExclusive(&m_stateLock);
@@ -936,19 +969,23 @@ void CIndirectDeviceContext::SetResolution(uint32_t width, uint32_t height)
mode.refresh = g_settings.GetDefaultRefresh();
mode.preferred = true;
AcquireSRWLockExclusive(&m_stateLock);
m_setMode = mode;
m_doSetMode = true;
ReleaseSRWLockExclusive(&m_stateLock);
bool modesLoaded = false;
AcquireSRWLockExclusive(&m_modeReloadLock);
if (g_settings.SetExtraMode(mode))
modesLoaded = PopulateDefaultModes();
ReleaseSRWLockExclusive(&m_modeReloadLock);
g_settings.SetExtraMode(mode);
if (!PopulateDefaultModes())
if (!modesLoaded)
{
DEBUG_ERROR("Failed to rebuild the display mode list");
return;
}
AcquireSRWLockExclusive(&m_stateLock);
m_setMode = mode;
m_doSetMode = true;
ReleaseSRWLockExclusive(&m_stateLock);
// IddCxMonitorUpdateModes[2] does not invalidate Windows' cached mode list,
// so the only reliable way to apply a new mode is to depart and re-arrive the
// monitor, forcing Windows to rebuild the topology from the new mode list.